212004320242 has 64 divisors (see below), whose sum is σ = 400685927040. Its totient is φ = 82680998400.

The previous prime is 212004320219. The next prime is 212004320249. The reversal of 212004320242 is 242023400212.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (212004320249) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 80059 + ... + 656062.

It is an arithmetic number, because the mean of its divisors is an integer number (6260717610).

Almost surely, 2^212004320242 is an apocalyptic number.

212004320242 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

212004320242 is a deficient number, since it is larger than the sum of its proper divisors (188681606798).

212004320242 is a wasteful number, since it uses less digits than its factorization.

212004320242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 736219.

The product of its (nonzero) digits is 1536, while the sum is 22.

Adding to 212004320242 its reverse (242023400212), we get a palindrome (454027720454).

The spelling of 212004320242 in words is "two hundred twelve billion, four million, three hundred twenty thousand, two hundred forty-two".